A、 当出现过热情况时作为额外空气源 As an extra source of air in overheat conditions
B、 万一失去GND和FLT风扇。In the event of loss of GND and FLT fans
C、 万一失去GND风扇。In the event of loss of GND fan
D、 飞行员不能选择STBY风扇。The STBY fan cannot be selected by the pilot
答案：B
A、 当出现过热情况时作为额外空气源 As an extra source of air in overheat conditions
B、 万一失去GND和FLT风扇。In the event of loss of GND and FLT fans
C、 万一失去GND风扇。In the event of loss of GND fan
D、 飞行员不能选择STBY风扇。The STBY fan cannot be selected by the pilot
答案：B
A. 50
B. 80
C. 100
D. 200
A. 在燃油箱内提供正气压。Provide positive air pressure in the fuel tanks.
B. 平衡燃油箱内压力。Equalize pressure in fuel tanks.
C. 使空气在油箱内流动以防止爆炸性气体混合。Cause air to flow through fuel tanks to prevent explosive gas mixtures.
D. 没什么作用。油箱在飞行中密封，以防止燃料在高海拔的低气压下蒸发。Do nothing. Tanks are sealed in flight to prevent fuel from evaporating in low atmospheric pressures at high altitudes.
A. 意味着N1或者N2转速超过了红区4秒以上Indicates that N1 or N2 has exceeded redline for more than four seconds.
B. 意味着相对应的发动机失效，FADEC系统无法成功重新起动对应的发动机，并且油门杆没有在关断位Indicates flameout of respective engine, FADEC was not successful with re−light and thrust lever not at shut−off.
C. 意味着对应的油门杆失效，FADEC将会继续保持最后一次的推力设定直到进近Indicates failure of respective thrust lever. FADEC will maintain last power level setting until approach.
D. 意味着相对应的操作引气活门无法关闭Indicates that respective operability bleed valve has failed closed.
A. 系统3使用热交换器而机翼油箱内的燃油用于冷却系统1和2的液压管路。System 3 uses a heat exchanger and the fuel in the wing tanks cools system 1 and 2 hydraulic pressure lines.
B. 系统1和2使用热交换器而系统3不需要冷却。System 1 and 2 use a heat exchanger and system 3 has no special provision for cooling.
C. 系统3使用热交换器而系统1和2不需要冷却。System 3 uses heat exchangers and system 1 and 2 do not require cooling.
D. 系统1和2靠流经回流线的冲压空气冷却而系统3不需要冷却。System 1 and 2 are cooled by ram air flowing across the return lines and system 3 has no provision for cooling.
A. 300海里/小时；
B. 280海里/小时；
C. 250海里/小时；
D. 230海里/小时
A. 中云
B. 卷状
C. 海上层积云
A. 可以
B. 不可以
A. 300KIAS/.78
B. 290KIAS/.76
C. 280KIAS/.75
D. 270KIAS/.74
